What Is a Living Will vs. an Advance Directive? Key Differences

The short answer: A living will is a type of advance directive — a written document that specifies your wishes about life-sustaining medical treatment if you become unable to speak for yourself. An advance directive is the broader category that includes both a living will (what you want medically) and a healthcare proxy/medical power of attorney (who you want to make decisions for you). Every adult should have both.

What Is an Advance Directive?

An advance directive is the umbrella term for any legal document that expresses your healthcare wishes in advance — before you lose the ability to communicate. Advance directives typically include two parts:

1. Living Will: Specifies what medical treatments you do or don't want (ventilator, CPR, feeding tube, dialysis) in specific circumstances (terminal illness, permanent unconsciousness, etc.)
2. Healthcare Proxy / Medical Power of Attorney (MPOA): Names a specific person — your healthcare agent — to make medical decisions on your behalf when you cannot

Both are part of the advance directive. Some states combine them in a single document; others use separate forms.

What Is a Living Will?

A living will (sometimes called a "directive to physicians" or "healthcare declaration") is the written expression of your medical wishes. Common decisions addressed include:

• Do you want CPR attempted if your heart stops?
• Do you want mechanical ventilation if you cannot breathe on your own?
• Do you want artificial nutrition (feeding tube) if you cannot eat?
• Do you want dialysis if your kidneys fail?
• Do you want all possible treatment, comfort care only, or something in between?

A living will becomes legally operative only when a physician certifies that you lack decision-making capacity — it does not override your choices while you are able to communicate.

Healthcare Proxy vs. Living Will: Which Is More Important?

Both are important, but most end-of-life experts say the healthcare proxy is more flexible. Medical situations are complex and unpredictable — no living will can anticipate every scenario. A trusted healthcare agent who knows your values can make nuanced decisions that no document can fully capture. The ideal is to have both: a living will that guides your agent and the medical team, and a healthcare proxy who can exercise judgment in ambiguous situations.

How to Create Advance Directives

Requirements vary by state. Most states require: two witnesses (not healthcare providers or beneficiaries), or notarization, or both. Free state-specific forms are available from:

• Five Wishes (agingwithdignity.org) — accepted in most states, combines living will and proxy
• Your state's department of health website
• POLST/MOLST forms (for people with serious illness — a medical order, not just a preference document)

Share copies with your doctor, hospital, healthcare proxy, and trusted family members. Store a copy where it can be quickly found. Many hospitals and EHRs now allow you to upload advance directives digitally.

Frequently Asked Questions

What is the difference between a living will and an advance directive?

An advance directive is the broader category — it includes both a living will (what medical treatments you want or don't want) and a healthcare proxy or medical power of attorney (who you want to make decisions for you). A living will is one component of an advance directive.

Do I need both a living will and a healthcare proxy?

Yes. Most end-of-life experts recommend both. A living will states your specific wishes; a healthcare proxy names a trusted person to make nuanced decisions in situations your living will may not fully address. Together they provide comprehensive protection.

When does a living will take effect?

A living will takes legal effect only when a physician certifies that you lack the capacity to make your own medical decisions. While you can communicate your wishes yourself, your living will is advisory, not operative.

Is a POLST the same as a living will?

No. A POLST (Physician Orders for Life-Sustaining Treatment) is a medical order signed by a physician, not just a preference document. It is used for people with serious illness and is actionable by first responders and medical teams. A living will is a personal document that guides doctors; a POLST is a doctor's order that implements those wishes.

Where can I get a free advance directive form?

Free state-specific forms are available from Five Wishes (agingwithdignity.org), your state's department of health, your hospital's patient services, or your hospice organization. Many states also accept the Five Wishes document, which combines living will and healthcare proxy in one.

Renidy connects grieving families with compassionate end-of-life professionals. Find support near you.